body {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../img/ys.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    height: 100vh;
    margin: 0;
    padding: 0;
    position: relative;
}

marquee {
    position: relative;
    top: -20%;
    transform: translateY(-50%);
    font-size: 30px;
    color: #e8e8e8;
    font-weight: 600;
    -webkit-text-stroke:1px black;
  }
h1 {
    color: #fff;
    font-size: 50px;
    font-weight: 600;
    -webkit-text-stroke:1px black;
    margin-bottom: 100px;
}
a {
    text-decoration: none;
    color: #fff;
    font-size: 24px;
    font-weight: 600;
    padding: 20px;
    margin: 20px;
    background-color: rgba(135, 207, 235, 0.772);
    border-radius: 10px;
    transition: all 0.3s ease-in-out;
}
a:hover {    
    background-color: #0076b6d2;
    padding: 30px;
    border-radius: 20px;
    -webkit-text-stroke:1px black;
}